User Area > Advice
Typical error message found in the LUSAS Solver text output file (*.OUT):
Dynamic memory request for
XX.00 MBytes , Failed
***DATABASE ERROR*** Unable to expand memory. Address space full
***FATAL ERROR*** Insufficient Memory Resources to Continue - System Aborting
Most common causes & links to solutions
This message is caused by a lack of space available for the
virtual memory ("Windows swap/ page file") on your PC.
There are several reasons why your PC may run out of space for
virtual memory, these are listed with suitable solutions below:
PC settings may cause temporary files to clash
with virtual memory
-
Relocate
or re-size PC virtual memory
-
Relocate
LUSAS temporary files
-
Relocate
Windows temporary files
-
Choosing values for LUSAS Modeller memory allocation
/ Choosing values for LUSAS Solver memory allocation
PC hard drive may be getting full
-
Clear
temporary files, and delete, archive or compress
files on the drive as appropriate to make space.
-
Options specific to
Eigenvalue analyses
-
Reduce
the size of the results files (*.MYS and *.OUT)
Still
encountering problems? Try
the database error checklist
More on cause & theory links
The operating system swap/ page
file is used by LUSAS Solver and expanded automatically. For some LUSAS
analyses, the virtual memory requirements can be quite
significant such that all free space on the disk or partition to
which the swap/page file is currently being written (typically
the C:\ drive on a PC) may become exhausted. In order to
understand the cause of this error more fully, you may wish to
read the following theory pages:
More on how LUSAS uses PC
resources
During solution LUSAS uses temporary files and also produces
*.OUT and *.MYS files. In large models, these files can be of
significant size (up to 8GB is possible) and they may take up
space on the disk, limiting space available for the operating system
swap/ page
file. Solutions relevant to this particular problem are
among those listed above.
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